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cleanup: simplify connection code

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Signed-off-by: Calum Murray <cmurray@redhat.com>
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Calum Murray 2025-07-10 14:15:29 -04:00
parent 873bf8d95a
commit caecaa8b31
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1 changed files with 14 additions and 12 deletions
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26
llama_stack/providers/utils/tools/mcp.py
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@ -46,19 +46,21 @@ async def client_wrapper(endpoint: str, headers: dict[str, str]) -> AsyncGenerat
for i, strategy in enumerate(connection_strategies):
try:
if strategy == PROTOCOL_STREAMABLEHTTP:
async with streamablehttp_client(endpoint, headers=headers) as (read_stream, write_stream, _):
async with ClientSession(read_stream, write_stream) as session:
await session.initialize()
protocol_cache[endpoint] = PROTOCOL_STREAMABLEHTTP
yield session
return
client = streamablehttp_client
elif strategy == PROTOCOL_SSE:
async with sse_client(endpoint, headers=headers) as streams:
async with ClientSession(*streams) as session:
await session.initialize()
protocol_cache[endpoint] = PROTOCOL_SSE
yield session
return
client = sse_client
else:
# this should not happen
logger.warning(
"tried to establish MCP connection with unknown protocol, defaulting to try with streamable_http"
)
client = streamablehttp_client
async with client(endpoint, headers=headers) as client_streams:
async with ClientSession(read_stream=client_streams[0], write_stream=client_streams[1]) as session:
await session.initialize()
protocol_cache[endpoint] = strategy
yield session
return
except* httpx.HTTPStatusError as eg:
for exc in eg.exceptions:
# mypy does not currently narrow the type of `eg.exceptions` based on the `except*` filter,